diff --git a/var/spack/repos/builtin/packages/py-boltons/package.py b/var/spack/repos/builtin/packages/py-boltons/package.py
index abcaf6f098..b025e18403 100644
--- a/var/spack/repos/builtin/packages/py-boltons/package.py
+++ b/var/spack/repos/builtin/packages/py-boltons/package.py
@@ -18,6 +18,7 @@ class PyBoltons(PythonPackage):
     homepage = "https://boltons.readthedocs.io/"
     pypi = "boltons/boltons-16.5.1.tar.gz"
 
+    version("23.0.0", sha256="8c50a71829525835ca3c849c7ed2511610c972b4dddfcd41a4a5447222beb4b0")
     version("16.5.1", sha256="fcded58596fa79bd1ada4488178e79fd11c7cb449f29ff9a6532411fb2db19b7")
 
     depends_on("py-setuptools", type="build")